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The influence of thermo-piezoelectric field in a circular bar subjected to thermal
loading due to non-Gaussian laser pulse is discussed using linear theory of thermoelasticity.
The equations of motion of the rod are formulated using the constitutive equations of a thermopiezoelectric
material. Displacement potential functions are introduced to uncouple the
equations of motion, heat conduction and charge equation. The frequency equation of the
system is developed under the assumption of stress free, thermal and electrically shorted
boundary conditions. The numerical calculations are carried out for the material PZT-5A and
the computed stress, strain and temperature distribution are plotted as the dispersion curves and
their physical characteristics are discussed for longitudinal and flexural (symmetric and
antisymmetric) modes.
Keywords: piezoelectric rod; non-Gaussian laser pulse; thermal vibration; sensors; actuators. |
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